Addressing a joint press conference, both leader exuded confidence and attacked Prime Minister Narendra Modi for his "raincoat" and "joke" remark.
Yesterday was the first phase of a multi-stage election in Uttar Pradesh, India's poorest and most populous state with 204 million people.
In a strong attack, Gandhi said the Prime Minister was "fond of peeping into others' bathrooms" and Googling and was a "complete failure".
On Friday, Mr Modi had said at an election rally in Haridwar that the BJP had a detailed dossier on the Congress leaders.
Modi has personally led the campaigning for his party, but the BJP hasn't fielded a local candidate for chief minister in Uttar Pradesh.
The ever-changing election scenario in Uttar Pradesh Assembly elections has not only confused experts but even astrologers, who are still trying to figure out the real picture.
In his almost 45-minute address, Modi, who represents Varanasi in Lok Sabha, attacked the Akhilesh-led government on several fronts, including law and order, even as he made promises of "rectifying the wrongs" committed by the state government.
Mr Modi had said at an election rally in Haridwar that the BJP had a detailed dossier on the Congress leaders.
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Pandit Ram Kumar, who sits outside BJP State office, wants the party to form the Government but his astrological calculations are not indicating such a scenario.
Akhilesh Yadav's Samajwadi Party has shaken hands with Indian National Congress and have contested for total 403 seats. One family has destro-yed India and the other family has destroyed Uttar Pradesh.
Rahul and Akhilesh have so far held two joint road shows after a pre-poll alliance between the two parties, first in Lucknow on January 29 and the second in Agra on February 3, reflecting the new found bonhomie between the two parties in the poll-bound state.
"The farmers of the country are faced with financial problems", he said.
#Why is the Samajwadi Party in Uttar Pradesh sheltering criminals?
"But the result is we have suffered the most number of casualties in the last seven years".
Suman, who goes by one name only, is waiting at a polling station with her two young children and says she will stamp on the flower - the lotus symbol of the Bharatiya Janata Party.